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Controllable-shape long-carbon-chain polyamide powder base and controllable-shape high-conductivity composite powder material

A technology of carbon chain polyamide and composite powder, which is applied in the field of polymers, can solve problems such as static charge accumulation, and achieve the effects of low cost, controllable shape, and easy operation

Active Publication Date: 2015-01-07
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, similar to traditional polymer materials, long carbon chain polyamide materials have high insulation properties, and their electrical conductivity is about 10-12S / cm, which is very prone to electrostatic charge accumulation

Method used

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  • Controllable-shape long-carbon-chain polyamide powder base and controllable-shape high-conductivity composite powder material
  • Controllable-shape long-carbon-chain polyamide powder base and controllable-shape high-conductivity composite powder material
  • Controllable-shape long-carbon-chain polyamide powder base and controllable-shape high-conductivity composite powder material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] 1) Dissolution of PA1012: Weigh 1g of PA1012 resin with a melt index of 1g / 10min, measure 100ml of DMSO, mix and heat to 150°C at a stirring speed of 300rpm, and keep warm for 2 hours to obtain a light yellow DMSO solution of PA1012;

[0063] 2) Precipitation of PA1012 powder: Take 1L of 99% methanol, heat it to 60°C for 5 minutes, and use it as a precipitating agent; then add a magnet and stir vigorously at a speed of 1000rpm, and at the same time use a glass rod to drain the DMSO solution into 60°C methanol precipitation In the analysis agent; the precipitated suspended matter is collected and washed to obtain a nearly spherical long carbon chain polyamide powder matrix, and the average particle diameter of the powder matrix is ​​1 μm.

[0064] The obtained near-spherical long-carbon-chain polyamide powder matrix can be further reacted with polyaniline to prepare a near-spherical long-carbon-chain polyamide / polyaniline composite powder material through in-situ polymeri...

Embodiment 2

[0067] 1) Dissolution of PA1012: Weigh 1g of PA1012 resin with a melt index of 4g / 10min, measure 100ml of DMSO, mix and heat to 150°C at a stirring speed of 800rpm, and keep warm for 2 hours to obtain a light yellow DMSO solution;

[0068] 2) Precipitation of PA1012 powder: Measure 1L of deionized water, heat it to 80°C and keep it for 5 minutes as a precipitating agent; then add magnets and stir vigorously at 1000rpm, and at the same time use a glass rod to drain DMSO solution into 80°C for deionization In the water precipitating agent: collect the precipitated suspended matter, wash to obtain the needle-shaped long carbon chain polyamide powder matrix, the average size of the long axis of the powder matrix is ​​10 μm, and the average aspect ratio is 12.

[0069] The needle-shaped long-carbon-chain polyamide / polyaniline composite powder material can be prepared by in-situ polymerization reaction of the obtained needle-shaped long-carbon-chain polyamide powder matrix and polyan...

Embodiment 3

[0072] 1) Dissolution of PA1012: Weigh 1g of PA1012 resin with a melt index of 3g / 10min, measure 100ml of DMSO, 5g of PVP, mix and heat to 150°C at a stirring speed of 500rpm, and keep it warm for 2 hours to obtain a light yellow DMSO solution;

[0073] 2) Precipitation of PA1012 powder: Measure 1L of 99% ethanol, weigh 10g of PVP, mix and put it in an ice-water bath at 0°C for 30 minutes as a precipitating agent; then add magnets and stir vigorously at 1000rpm, while using a glass rod Drain the DMSO solution into the ethanol precipitant; collect the precipitated suspended matter, wash to obtain a rhombohedral long carbon chain polyamide powder matrix, and the average particle size of the powder matrix is ​​8 μm.

[0074] The obtained orthorhombic long carbon chain polyamide powder matrix can be further reacted with polyaniline through in-situ polymerization to prepare a rhombohedral long carbon chain polyamide / polyaniline composite powder material.

[0075] The in-situ polyme...

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Abstract

The invention belongs to the field of high polymers, and particularly relates to a controllable-shape long-carbon-chain polyamide powder base and a controllable-shape high-conductivity composite powder material. The long-carbon-chain polyamide powder base is spherical, acicular or rhombic. The controllable-shape high-conductivity composite powder material is composed of 85-95 wt% of long-carbon-chain polyamide powder base and 5-15 wt% of polyaniline. The long-carbon-chain polyamide powder base with certain pattern is subjected to controlled production, and polyaniline in-situ polymerization is performed on the powder base to implement polymerization and coating of the conductive polyaniline, so that the finally obtained composite material has the advantages of controllable microscopic shape, uniform interface, favorable composite effect and high conductivity. The conductivity of the obtained long-carbon-chain polyamide / polyaniline composite powder material is 10<-5>-10<3>S / cm, and the composite powder material can satisfy the antistatic requirement of the polymer material.

Description

technical field [0001] The invention belongs to the field of macromolecules, and in particular relates to a shape-controllable long carbon chain polyamide powder matrix and a shape-controllable high-conductivity composite powder material. Background technique [0002] Polyamide (PA), commonly known as nylon, has always ranked first in engineering plastics in terms of output and consumption. Polyamide has good mechanical properties, wear resistance, solvent resistance, and excellent processing performance, and its products are widely used in the fields of automobiles, textiles, machinery and food packaging. Generally speaking, polyamides with a structural unit carbon chain length of more than 10 are called long carbon chain polyamides. In addition to the many advantages of nylon materials, long carbon chain polyamides have longer carbon chain lengths in their structural units. It has the advantages of low water absorption, good dimensional stability, good weather resistance,...

Claims

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Application Information

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IPC IPC(8): C08J3/14C08L77/06C08L39/06C08L79/02C08G73/02
Inventor 董侠曹诣宇高昀鋆王莉莉王笃金周勇刘学新
Owner INST OF CHEM CHINESE ACAD OF SCI
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